The ore deposits of Utah . .1. PHOTOMICROGRAPH OKCARRONIZED VEGETARLK MATE-RIAL FROM THE DOLLY VARDEN MINE, SHOWING CELLU-LAR STRUCTURE. Ei\liirf;e(J 150 diameters. n. photomicro(;raph of ve(;etahle material re-placed RY sulphide from THE BLUE DIKE MINE,SHOWING CELLULAR STRUCTURE. Lighl areas, chalcopyrite;dark inlerstilial areas, chalixM^iU?. Enlar^eil 50 diameters.

---

Size: 1579px × 1582px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookdecade1920, booksubjectminesandmineralresou